The MTT MS3763B Slim Plug-In RTD Differential Temperature Transmitter measures the temperature difference between two Pt100 RTD sensors and converts it into an isolated, standard DC current or voltage output, extending the same differential-measurement concept as the MS3763 with a wider choice of configurable temperature and differential ranges. Where a process needs to monitor heat exchanger performance, cooling approach temperature, or any application built around comparing two temperature points, the MS3763B can be ordered to match the specific band the process operates in rather than being limited to a single fixed range.
Selectable base temperature ranges spanning from sub-zero to 100°C, together with a choice of narrow or wide differential spans, let this transmitter be specified precisely for the application rather than over- or under-scaled for it. Built-in burnout protection drives the output upscale if any RTD lead opens, giving an unambiguous fault indication, while front-accessible trimmers allow zero and span to be fine-tuned on site. Dual isolated outputs are available so the differential reading can be distributed to two separate destinations from a single module.
| Sensor Type | 2-wire RTD Pt 100Ω |
| Excitation Current | Approx. 2mA |
| Lead Wire Resistance | 50Ω max per wire |
| Temperature Range Options | -20 to 30°C, 0 to 50°C, or 50 to 100°C |
| Differential Range Options | ±10°C, ±20°C, 0 to 20°C, or 0 to 50°C |
| Output Types | Configurable current (0-20mA, 4-20mA) or voltage (±10V, 0-10V, 0-5V, 1-5V, etc.); single or dual isolated outputs |
| Output Load | 750Ω max (single 4-20mA); 550Ω (Output 1) / 350Ω (Output 2) max (dual) |
| Adjustment | Approx. ±5% of span, zero and span, via front trimmers |
| Isolation | 4-way isolation between input, Output 1, Output 2, and power; 100MΩ min. insulation resistance @500V DC; 2000V AC dielectric strength for 1 minute |
| CMRR | 100dB min. (500V AC, 50/60Hz) |
| Burnout Protection | Upscale if any of the three wires (RTD A, RTD B, COM) opens |
| Power Supply | 100-240V AC (85-264V, 47-63Hz), 24V DC ±10%, or 100-240V DC (85-264V); single output 5.5VA max (AC) / 1.5W max (24V DC) / 6.0W max (DC); dual output 6.5VA max (AC) / 1.8W max (24V DC) / 7.2W max (DC); 160mA fuse standard |
| Accuracy | Better than ±1.0% of span for most configurations, ±0.5% of span for 0-50°C differences; ±0.2% of span per 10°C temperature effect |
| Response Time | 300ms max (0-90%, step input at 100%) |
| Dimensions | W29 x H86 x D125mm (including mounting hardware) |
| Weight | 120g (main unit) / 80g (socket) max |
| Terminals | M3.5 screw terminal with power cover and drop-proof screws, 0.8-1.0 Nm torque |
| Mounting | Wall or DIN rail mount |
| Operating Conditions | -5 to 55°C, 5-90% RH non-condensing |
| Storage Temperature | -10 to 60°C |
Frequently Asked Questions
What is the MTT MS3763B used for?
It measures the temperature difference between two Pt100 RTD sensors and converts it into an isolated, standard DC current or voltage output. It’s the same differential-measurement concept as the MS3763, for applications like heat exchanger performance, cooling approach temperature, or any process built around comparing two temperature points.
How is the MS3763B different from the standard MS3763?
Range flexibility. The MS3763 has a fixed 0-50°C range with a fixed 0-20°C differential, while the MS3763B can be ordered with a choice of temperature range (-20 to 30°C, 0 to 50°C, or 50 to 100°C) and differential range (±10°C, ±20°C, 0 to 20°C, or 0 to 50°C), plus configurable output types. Choose the B model when your application doesn’t fit the standard model’s fixed ranges.
What RTD sensor type is compatible?
2-wire Pt100Ω RTD sensors, with a lead wire resistance limit of 50Ω max per wire. Confirm your existing RTD’s wiring and type before ordering.
What output signal options are available?
Configurable current (0-20mA or 4-20mA) or voltage (±10V, 0-10V, 0-5V, 1-5V, and others), single or dual isolated outputs. Tell us the output your receiving instrument expects and we can confirm.
How do I know if I need the MS3763B instead of the standard MS3763?
If your application’s temperature range or differential span falls outside the standard MS3763’s fixed 0-50°C / 0-20°C windows, the MS3763B’s configurable ranges are the fit. Send us your absolute temperature range and expected differential and we can confirm the right configuration before you order.
Download MTT MS3763B Slim Plug-In RTD Differential Temperature Transmitter information here
Spec Sheet: MTT_SpecSheet1_MS3763B_Rev120_E
Manual: MTT_Manual1_MS3763B_Rev110_E
